In measuring the surface tension of a liquid by the drop-weight method, 12 drops of the liquid falling from a tip whose diameter is 0.800 cm are found to weigh 0.971 g. What is the surface tension of the liquid, if the value of F is 1.66. [Answer: 5.26 x 10² N m²¹]

In measuring the surface tension of a liquid by the drop-weight method, 12 drops of the liquid falling from a tip whose diameter is 0.800 cm are found to weigh 0.971 g. What is the surface tension of the liquid, if the value of F is 1.66. [Answer: 5.26 x 10² N m²¹]

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Chapter1: Units, Trigonometry. And Vectors

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Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).

Question

In measuring the surface tension of a liquid by the drop-weight method, 12 drops of the
liquid falling from a tip whose diameter is 0.800 cm are found to weigh 0.971 g. What is
the surface tension of the liquid, if the value of F is 1.66.
[Answer: 5.26 x 10² N m¹]

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